That's the Central Corridor line between Minneapolis and St. Paul, and it opened June 14. It's now the Green Line, and the original Hiawatha Line is the Blue Line. The two lines share tracks in downtown Minneapolis between Target Field and Downtown East, and then diverge. Northstar commuter trains also stop at Target Field.

They have two more colored lines, the existing Red Line and the planned Orange Line, both Bus Rapid Transit systems.

While approximately eight of the 13 miles of the Bottineau Blue Line Extension light rail extension project are planned to run in the BNSF Railway Company’s right-of-way, the railway has refused to negotiate with the project office.

“BNSF is not prepared to proceed with any discussion of passenger rail in this corridor at this time,” wrote BNSF vice president and senior general council Richard E. Weicher in a letter dated Jan. 9, 2018.

Apparently freight business on the Monticello Sub (ex-GN passenger line to Fargo via St. Cloud) is still more profitable than selling out to the government.

The article noted that Hennepin County had prevented construction of a junction between a CP Rail line and this BNSF line. They weren’t clear, but I think they mean the ex-Soo main, which the ex-GN crosses at a diamond currently. By disallowing that connection (meaning that BNSF would use CP trackage rights directly to Northtown Yard rather than going via downtown Minneapolis) the Met Council made it much harder for BNSF to vacate the southern portion of the line for LRT.